I'm not quite sure I understand the configuration of your jets. If I'm reading correctly, there's a ring that screws onto a housing which contains the jet. The housing, rather than the ring is turned to adjust the flow or air mix.
not really....the housing is permanent....attched to the tub, sealed or whatever.
The jets are Artic's custom jets, but I think they are pretty much compatible with Waterways....matter of fact, I believe the housings are Waterway, adn the jets are intercahngable with waterways.
You rotate the outer ring of the jet to adjust flow.
The jets snap in place in the housing....you place it in the housing and push till it clicks in place......to remove, you turn it counterclockwise till it stops (full water flow) then give it another little turn and it pops out....there's a wide groove in the body of the jet....looks like a 1" diam, 1/8" thick o-ring would fit in there just nicely.....or could use a different thickness of O-ring to adjust the tension required to adjust the jet flow......
they can be removed/replaced with the tub full......my tub has 3 different types of 3" jet, and 2 types of 5" jet, and I sometimes swap them from seat to seat, depending on where I'm sitting and what feel I want......